The conodont Iapetognathus and its value for defining the base of the Ordovician System

James Frederick Miller; John E. Repetski; Robert S. Nicoll; Godfrey Nowlan; Raymond L. Ethington

doi:10.1080/11035897.2013.862851

The conodont Iapetognathus and its value for defining the base of the Ordovician System

James Frederick Miller, John E. Repetski, Robert S. Nicoll, Godfrey Nowlan, Raymond L. Ethington

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Nicoll et al. (1999, Brigham Young University Geology Studies 44, 27-101) published the taxonomy of species of the ramiform conodont Iapetognathus Landing in Fortey et al. (1982, The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations, National Museum of Wales, Geological Series No. 3, Cardiff, 95-129) and its ancestor Iapetonudus Nicoll et al., 1999. Cooper et al. (2001, Episodes 24, 19-28) used the First Appearance Datum of Iapetognathus fluctivagus Nicoll et al., 1999 to mark the base of the Ordovician System at Green Point, Newfoundland. Terfelt et al. (2012, Lethaia 45, 227-237) re-evaluated Iapetognathus at Green Point and made several taxonomic and stratigraphic conclusions, nearly all of which we refute herein.

Original language	English
Pages (from-to)	185-188
Number of pages	4
Journal	GFF
Volume	136
Issue number	1
DOIs	https://doi.org/10.1080/11035897.2013.862851
Publication status	Published - Jan 2014

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10.1080/11035897.2013.862851

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title = "The conodont Iapetognathus and its value for defining the base of the Ordovician System",

abstract = "Nicoll et al. (1999, Brigham Young University Geology Studies 44, 27-101) published the taxonomy of species of the ramiform conodont Iapetognathus Landing in Fortey et al. (1982, The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations, National Museum of Wales, Geological Series No. 3, Cardiff, 95-129) and its ancestor Iapetonudus Nicoll et al., 1999. Cooper et al. (2001, Episodes 24, 19-28) used the First Appearance Datum of Iapetognathus fluctivagus Nicoll et al., 1999 to mark the base of the Ordovician System at Green Point, Newfoundland. Terfelt et al. (2012, Lethaia 45, 227-237) re-evaluated Iapetognathus at Green Point and made several taxonomic and stratigraphic conclusions, nearly all of which we refute herein.",

keywords = "Clavohamulus, Green Point, Hirsutodontus, Iapetognathus, Iapetonudus, Ordovician",

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AU - Nicoll, Robert S.

AU - Nowlan, Godfrey

AU - Ethington, Raymond L.

PY - 2014/1

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N2 - Nicoll et al. (1999, Brigham Young University Geology Studies 44, 27-101) published the taxonomy of species of the ramiform conodont Iapetognathus Landing in Fortey et al. (1982, The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations, National Museum of Wales, Geological Series No. 3, Cardiff, 95-129) and its ancestor Iapetonudus Nicoll et al., 1999. Cooper et al. (2001, Episodes 24, 19-28) used the First Appearance Datum of Iapetognathus fluctivagus Nicoll et al., 1999 to mark the base of the Ordovician System at Green Point, Newfoundland. Terfelt et al. (2012, Lethaia 45, 227-237) re-evaluated Iapetognathus at Green Point and made several taxonomic and stratigraphic conclusions, nearly all of which we refute herein.

AB - Nicoll et al. (1999, Brigham Young University Geology Studies 44, 27-101) published the taxonomy of species of the ramiform conodont Iapetognathus Landing in Fortey et al. (1982, The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations, National Museum of Wales, Geological Series No. 3, Cardiff, 95-129) and its ancestor Iapetonudus Nicoll et al., 1999. Cooper et al. (2001, Episodes 24, 19-28) used the First Appearance Datum of Iapetognathus fluctivagus Nicoll et al., 1999 to mark the base of the Ordovician System at Green Point, Newfoundland. Terfelt et al. (2012, Lethaia 45, 227-237) re-evaluated Iapetognathus at Green Point and made several taxonomic and stratigraphic conclusions, nearly all of which we refute herein.

KW - Clavohamulus

KW - Green Point

KW - Hirsutodontus

KW - Iapetognathus

KW - Iapetonudus

KW - Ordovician

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JF - GFF

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ER -

The conodont Iapetognathus and its value for defining the base of the Ordovician System

Abstract

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